下面就是满足你设想的几个主程序，你还可以在实际应用中不断完善和扩充：
login.asp
‘ 考生验证
<％@ Language=VBScript％>
<％
name=trim(request("name"))
passwd=trim(request("passwd"))
if name<>"" and passwd<>"" then
‘ 检查考生是否输入用户名和密码
Set conn = Server.CreateObject("ADODB.Connection")
conn.Open "driver={Microsoft Access Driver(＊.mdb)};
dbq="＆ Server.MapPat("exercise.mdb")
set rs= server.createobject("adodb.recordset")
sql= "select ＊ from user where user=
‘" ＆name＆"‘ and passwd=‘" ＆ passwd ＆"‘"
Set rs= conn.Execute(sql)
‘ 验证考生合法性
if not(rs.eof) then
if rs("score")<>0 then
‘ 检查考生是否已参加过考试,若是则进行成绩查询
response.write rs("user")＆"的考试成绩是"＆rs("score")
else
session("pass")=1
session("user")=name
response.redirect "test.asp"
end if
else
Response.Write "噢,您输入的用户名或密码不正确!"
end if
else
end if
％>
<HTML>
<HEAD>
<META NAME="GENERATOR" Content="Microsoft Visual Studio 6.0">
<TITLE>精彩春风之考生登录</TITLE>
</HEAD>
<BODY>
<FORM action="login.asp" id=
FORM1 method=post name=FORM1>
<P title="">＆nbsp;</P>
<P title="">＆nbsp;</P>
<P title="" align=center>考生:
<INPUT id=text1 name=name style="HEIGHT:22px; WIDTH: 103px"></P>
<P title="" align=center>密码:
<INPUT id=password1 name=passwd style="HEIGHT: 23px; WIDTH: 101px" type=password></P>
<P title="" align=center>
<INPUT id=submit1 name=submit1 type=submit value="进入 " style="FONT－SIZE: medium; FONT－STYLE: normal; FONT－VARIANT:normal; FONT－WEIGHT: bold" title=""></P>
<P title="" align=center>
</P>
</FORM>
</BODY>
</HTML>
test.asp
‘ 从题库中取题考试
<％@ Language=VBScript ％>
<％
if session("pass")<>1 then
response.redirect "login.asp"
else
end if
Set conn = Server.CreateObject("ADODB.Connection")
conn.Open "driver={Microsoft Access Driver (＊.mdb)};
dbq="＆ Server.MapPath("exercise.mdb")
sql="select ＊ from test"
Set rs = conn.Execute( sql )
‘ 提取试题
％>
<SCRIPT LANGUAGE="JavaScript">
var isn1=null;
var isn2=false;
today=new Date();
function stopit(){
if(isn2){
clearTimeout(isn1);
}
isn2 = false;
}
function startit(){
stopit();
isnclock();
}
function isnclock(){
var now=new Date();
var hrs=now.getHours();
var min=now.getMinutes();
var sec=now.getSeconds();
document.clckh.disp.value=""＋((hrs>12) ? hrs－12 : hrs);
document.clckm.disp.value=((min<10) ? "0" : "")＋min;
document.clcks.disp.value=((sec<10) ? "0" : "")＋sec;
document.clck.disp.value=(hrs>=12) ? "p.m." : "a.m.";
isn1=setTimeout("isnclock()",1000);
isn2=true;
}
</SCRIPT>
‘ 以上是一个计时函数
<HTML>
<HEAD>
<META NAME="GENERATOR" Content="Microsoft Visual Studio 6.0">
</HEAD>
<BODY onLoad="startit()" BGCOLOR="FFFFFF">
<center>
‘ 调用计时函数显示时间
<TABLE BORDER=2>
<TR>
<TD>Time</TD><TD>Hour</TD><TD>Min</TD><TD>Sec</TD><TD></TD>
</TR>
<TR>
<TD>
案例:如何实现网上考试？